3554459981 has 2 divisors, whose sum is σ = 3554459982. Its totient is φ = 3554459980.

The previous prime is 3554459971. The next prime is 3554460001. The reversal of 3554459981 is 1899544553.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3449212900 + 105247081 = 58730^2 + 10259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3554459981 is a prime.

It is a super-2 number, since 2×3554459981² = 25268371513061040722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3554459971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1777229990 + 1777229991.

It is an arithmetic number, because the mean of its divisors is an integer number (1777229991).

Almost surely, 2^3554459981 is an apocalyptic number.

It is an amenable number.

3554459981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3554459981 is an equidigital number, since it uses as much as digits as its factorization.

3554459981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888000, while the sum is 53.

The square root of 3554459981 is about 59619.2920202848. The cubic root of 3554459981 is about 1526.1288756590.

The spelling of 3554459981 in words is "three billion, five hundred fifty-four million, four hundred fifty-nine thousand, nine hundred eighty-one".